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Insights on AI, game development, and vibe coding from the SBS Games team.

AI ToolsBeziGame DevelopmentUnityaiai-agents
Four AI Agents, One Brief, One Line of Prompt. Only One Finished.

Oct 18, 2026

Four AI Agents, One Brief, One Line of Prompt. Only One Finished.

Codex, Cursor, Antigravity and OpenCode got the same game brief and ran side by side. One finished in 26 minutes. One ran out of free usage. One stopped mid-check. One worked alone for almost 8 hours and reported success on a game you can't see. What each agent did, what it said it did, and all five games to play.

Four AI Agents, One Brief, One Line of Prompt. Only One Finished.
9 min readShahar Bar

Four AI Agents, One Brief, One Line of Prompt. Only One Finished.

Codex, Cursor, Antigravity and OpenCode got the same game brief and ran side by side. One finished in 26 minutes. One ran out of free usage. One stopped mid-check. One worked alone for almost 8 hours and reported success on a game you can't see. What each agent did, what it said it did, and all five games to play.

aiai-agentsgame-devclaude-codecodexcursortools
Unity's Codex Plugin Built My Menu. My Own UI Rules Showed It Wasn't Done.
10 min readShahar Bar

Unity's Codex Plugin Built My Menu. My Own UI Rules Showed It Wasn't Done.

The day after Unity shipped its official plugin for OpenAI Codex, I gave it a 337-pixel game menu mock and asked for a real main menu. It delivered one that looked finished. Then I made it check the menu against my UI rules, and the menu that looked done turned out not to be.

aiunitycodexuigame-devtools